Telephone-exchange system.



E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM. 2140mm! Hum Jun: 23. won.

18 BHEBTS-8HBIT 1.

E. E. CLEMENT. TELEPHONE EXCHANGE SYSTEM.

APPLXOATIOI nun nun as. 1000.

Patented Sept 1, 1914 I8 SHEETS-SHEET 2 am: a n h l 5. E. CLEMENT.

TELEPHONE nxcnmez: sYs'rnu.

APPLIOA'HOI FILED JUIE 23, 1906.

Patented Spt. l, 191* 3n van I'm E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

union-Io! run Jun 23, non.

1,109,617. Patented Sept. 1, 1914.

10 SHEETS-ill?! 5.

Q 3am for.

B. E. CLEMENT.

TELEPHONE nxcaumn SYSTEM.

APPLICATION FILED JUNE 23, 1906.

1,109,617. Patented ept 1, 19m

ll SHEETS-SHEET B.

E. E. CLEMENT.

TELEPHONE EXCHANGE sts'rnx.

\PPLIOATXOI IILED JUIE B3, 1906.

18 u MW cw In E. E. CLEMENT.

'rznsrnonz EXCHANGE SYSTEM,

APPLIOATIOI FILED JUII: 23, M06.

1,109,617. Patented Sept. 1, 19m

18 SEEETB-BEEBT l.

E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

uvuurrmn FILED JUNE 23,1906.

1,109,617, Patented Sept.1,1914.

18 SHEETS-BHEET 9.

uuzutoz B. E. CLEMENT.

TELEPHONE EXGHANGE SYSTEM.

urmonmx mum mm: 2a. 1000.

1,109,617, Patented Sept. 1, 1914,

ll SEEETBBKEET 10.

n fin -u n n n -HT 20 2/ 22 I30 25 1' T I 31 a noun! B. E. CLEMENT. TELEPHONE BXGHANGE SYSTEM.

nruunmu FILED mun 2a. 1908.

1,109,617, Patented Sept 1, 1914.

18 SHEETS-"SHEET ll.

77683603601 ,fiwe/ ([01:

E. B. CLEMENT TELEPHONE EXCHANGE SYSTEM.

APPLIUATION nun: Jun}: 23,1800

1,109,617. Patented Sept. 1, 1914;

18 SHEETS SHEET 12.

0 0 0 0 9X0 0 OJ B. E. 'JLEMENT.

'rnmzmoxs nxonno: SYSTEM.

APPLIOATIOI FILED JUIE 23. 190B.

Patented Sept 1, 1914.

13 SHEETS-BREE? 13.

E. E. CLEMENT. TELEPHONE sxcnmur; SYSTEM. APPLIOATIOH HLED JUNE 23. \906.

1,109,617., Patented Sept. 1, 1914.

515s um tot wihwnsaa E. E. CLEMENT.

TELEPHONE EXCHANGE SYSTEM.

APPLIOATIGK FILED J'BHE 23,

Patented Sept 1, 1914.

18 8KEBTB-BKBBT 15.

3140a In 2/01 hmoam B. E. (ELEMENT. :rnmnoun sxoamen SYSTEM. V APPBIOATIOH FILED JUIE 33, 1906. 1,109,617. Patented Sept 1,1914.

' 1B EKEBTB GHBB'I 16.

Secondary I Selectors Connectiqg Switches.

Su bscri -ers Primary Selectors B. B. CLEMENT.

TELEPHONE momma: SYSTEM.

LPI'LIUATIDH TILED HIKE 23, 1908.

18 SKSE'IEQHBET 11.

Q12 4 I'M an;

B. E CLEMENT.

1129mm: momma SYSTEM.

APPLIDATTUN TILED SURE 23,1906

Patented Sept. 1, 19%

'1 n. T 1 m a 5 m l u A m E11 umnhn M 1 a mu wlllkvi F 5 M a n Fr WW4- H L w w A q Ka i I t Mm UNITED sTArns PATENT OFFICE.

EDWARD E. CLEMENT, OF WASHINGTON. DISTRICT OF COLUMBIA,

ASSIGINQR, BY

MESNE ASSIGNMENTS, T0 FREDERICK (i. SiEVENS. 0F AT'IICA, N YURK.

TELEPHONE-EXGHAN G EYETEP I.

Specification of Letters fatent.

Patented Sept. 1, 1914.

Application filed June 23, 1906. Serial No. 323,096.

T0 all 1157mm it may concern: 7 v

Be it known that I, EnwAnn E. (JLnMnN'r, :1. citizen of the United States. residing; at

\ \"ashington, in the District of Columbia,

have imented certain new and useful linprovements in Telephone-Er-zolnmge Systems. of which tile following :1. specification. ret crew-e having had therein to the lithtiiillifil'i) ing drawing.

My invention relates to telephone. exchange systems and has for its object the improvement; and simplification of such eystenw.

in order to attain my object I make we of :1 combination of manual and ootouuitn connective apparatus in the following mate ner: I bring in the subscribers lines to one or more ventral points and at each of these central poiuh; l place what l. cull primary selector set. whereby the lines wlwn milling: are automatically vouimvterl to idle trunks which lead out from. pritxmry selectors to the connective impair-a tos. For it small exrhongc this (lllii'lt'tttt'v apparatus is iocotvtl llll'itlltlit, juxtap sition to the prints: tors. in arge exchange the primun tor: are pret'crolily located at convenient distributing ooiuls or hrouch exchanges. ilil 'l the trunk lines run then e to the main o -I. e or clearing house. where tho i-oi'mwtm; apparatus is located.

There are two ways in which I can treat this connective apparatus. Using an exchange of 1000 lines for cxmnplc. this oilll require, mrjortling to the usual calculation, 1.011. or 100 trunk lines, with n correspouih iug quantity of connective apparatus. According to the present invention I may either terminate those trunks in sets of connective switches, one set for each trunk for selecting lines desired to complete a call, or I may apportion it smaller quantity of connective apparatus among the trunks and provide for :1 calling trunk to mltomaticaliy seieet on ltlll. set of connective apparatus. In other words. while there may he 10% 0f trunks coming into the clearing house. or lending from the primary selectors in :1 small exchange. there are cases Where not more than 5'; of actual connective apparatus is required. ln addition to the connectiveup pnrntus. a leading characteristic feature of the iuwutiou lies in the use of what 1 (all secondary mint-tors for connecting the trunks when calling to itlle operators for attention.

The operators nslertoin the nunihc s wanted, illltl then control the connective switches so as to produce the desired connec ion. This can he clone in (livers ways. of whieh I shall describe what I consider the simpl st typi col Wlij' herein. I shalt also refer to othc Wti}-". the underlying basis of all of them ifltltlfj tit-it. the li s z'tiitomatirziily brought to and toimectcil with the operator. Until that; the operator completes the connection hy controlling further ap 'mrntus. Tho duties of the operato are redu ed to th perform- :im-e of two :icts onlv. Vim, obtaining the mnolwr wanted and setting the ennuup on huttous reswmhiing those of on adding mnohine, ther by committing at power operated trnmmitt uir .nmchinc to send the desired itillllilll'ri wi operate the automatic switrhiog apparatus.

The form oi my invention which I have selected i l-i illustration herein comprises truuhs inn ing across to the lines of the en? iewer It ll :htlS oi the trunk. end her iu; v to in operators of the wt'hai zit {WITH nmiww of the trunk. The open ntiot; f the truui; IS as Foll w: wh n t line .w-ll's. till: first coil oi an ltl l1 trunk nutonniti will rouowts with the. willing line; the with tlwll out uutticolly sclm'ts'nn idle opwho. equipment and notifies the operator of the call: the operator then takes the subsrrihefis order and controls connecting zippnmlus at the second end of the trunk. whereby the sevond end of the trunk autoitntticnll mnuetts with the ticsircll. line, thus minim-ting the culling with the calltd line; lust of all my system provides for the automatic release of the operotons equipment from the trunk when the cnlied line has hem picked out, and provides for the :iutoumtitrelease. of the trunk by the subscriber when the conversation has been com pletctl.

My invention is illustrated in the accompanying drawings wherein-- Figure 1 shows the subscribers stations and lines. Figs. 2, 3 and 4: show portions of three primary selector sets. l'ig. 5 shows it set of signaling buttons and an impulse generator to work in connection wiih Fig. 6. Fig. 6 shows a trunk circuit with :1 s rondury set of relays which are normally disconnectoil from it. Fig. 7 shows automatic switch circuits. Fig. 8 is a modification of Fig. 6

and works in conjunction with Fig. 7. Fig. 9 shows apparatuai equivalent to that of" Fig. 5 but adapted to operate in eonneetion with Figs. 8 and 7. In this figure the toothed number wheels are driven from a power shat and the connection between the Wheels and the shaft is made by a nieehanieaily controlled clutch. Fig. 10 is a condensed diagram of a primarv seleetnr set. Fign. it and 12 are respectively a sicle and top plan View of a ten point relay used in my system. Fig. 13 is a plan View allowing a strip of keys or buttons containing two signal lamps. Fig. 14 is a plan \lPW showing the sliile Whieh i-nntiols or latehes the various hut tons. Fig. 1? is a sectii'nial view (if a pun tinn of one of the. strips of buttons. Fig. lit in an eiul view showing the button niounteil an an iuelineel sllPlJOIt. or eabinet. Fig. 17 is. a plan view showing a strip ul ten but tong. Fig. 1 is a top plan View ill Fig. it; shun in; the :u'rangenient. ut the various sets. of bu tons. there hein one oi these outlits for eaeh oj'ieiator. l'ig. i9 is n t'linfllztlll showing su'itrhes instead (it relays for priinar auil l-itl lltltll .-.-eleet.or nets. Fig. 21) is a. skeleton diagram showing a number of siibaeriliern stations. a eentral, olliee. equipinent. having primary .llltl seroi'ulary selem tor; onl tttlll Sttllll'litl) seleeior being zip-- ropriateil to one operators key FQt, Sui

srrih-ars. linen being shown niultipleil into the primary seleetors filllt] the outgoing velm-tire automatic switches. Fig. 22 re prialui'es a portion of the trunk fit ot Fig. t1 Ellltl .SlltHVS also the correspoiii'ling porti-Hlh it trunks 130 131 aiul ii-"ltliliiil to illustrate the relation existing hetween the trunks whereby one. trunk always; is hehl i ltiltlifiifSS tn respond to a call institut d :2 teleph ne line. Fig. 252 rproiluees the Hee-onilary SLitt'tbl equipment of Fig. (l in duplicate. showing the relation between the nperatm'a" equipments and the trunk rirruits \lllt"ll an artix'e trunk will seleet itllll eon nert. with .in iille operatufs equipment.

llet'ore p oeeeiling' to the ('lT'tltltH. wherein the inreutiun in the present. ease reniiies. it will he rulrisnble to obtain a elear unilen Standing ot the types. of apparatus nhieh i employ aml n'hieh are ho\\'n in Figs. it to in inrluhite. 1 (lo not gi e any Sperial illusi tiliiiit of u single pnint or orrlinary relay. i i r the reason that everynne skilled in the art. in so familiar with these (leviees; as to render it unneeennary. That portion ol in t-\ ..n whit-h is illustrateil in Figs. :3. .l and t (tillHtltlliPs what I have terineil the primary seleetor or answering pin-lion of the 'atein. lnjhist. an alreaily art furth. zip pear a number of ten point relays aiul a number of single point or orilinary relays. Them latter may he of any suitable type. The tail Qpeeial feature required is that ot iiunhhwinding, \vhieh, as I shall point nut her inafter, ran be ilispenseil with it some other means he provitletl for lurking the relays when energized.

The apparatus. at th siubseribers' Sizktlhlli-l also forms n part. in itnelt of in present inrel'ition. exeepi as it. eo-aets with the apparatus anil eir uit at the ventral otli e. l ronteznplate niangr an oriliuar ronunon hat.- tery ilt-it-Piiffilt'. unitit. the. same as thoue tlll ph -veil in stan larii manual h\\li.!"lliJOll' l systems.

Referring then tn i 'igs. l1 and 12. I. will briefly (ilbi'l'liflli the ten point relay N. This rpnqiriuw an iiun hark :{fllia u, a pair (it magnets illlllilllt l thereon. an armature n" witiieilflgf titl the trout. .l thereoh anti :1 ue-tot' eontaJ-t spring: I it". u". n. overl riu the upper bell ei'anlc extension i a to he worked tlu-rebr. .elwen iii' tlitfbt': bpriugs. all secured at. the rear uni ot' the rehiy upon the return mem er If. oi the haeli yoke. lhe t'ront 911th. i3? pale pie-res iii the eon-s of the igleetieunagjnets; u rt-rein,- the trout. yoke if of n n-n1 Q'Ht'tit material, sueh an brass, this aha! inning: an upper r turn portion it. oven lying thimagnet windings. and nli'neii with the i'nturzi portion, n". t' the lia -it yoke w. '[T on thi-s return portion it til the. trout yolie' the upper hell-Prank arm 1% of the. :n'uuiture u". lien tlat untl r normal emuli ti iui. (ut from tent! to enil of this upper bt'll-erault portion a. are two QiiuHeH in whirls rest. the insulating Sititifi ol' he Spring .aeta. The tunrtion (If these Fil l'fw with the Hilltlh' resting in them is to retain the arma ture in plaee. .Xt. th ir front (llllS the springs are separatwl by slmulilereil stuils the itl\\'l'llll(l.-l Htlitl of eaeh pair resting upon the arinziturtg ear-rpm; the lower spring of i s pair It" on its shoulder. [illtl the. upper Spring! in on ltF head, its Sitll] passing through a hole in the pring 21. while the uppermorit. Hilltl of eat-h pair rests. upon the. pig if. c-upports the spring u upon its iuill itl'. :iiui earriei-z the F n'ingz. n. on its .Htl itsntem panning through a hole in the E" The urinating stlnis :illeeti. only z lill'll n". u of eaeh :set. lhene (oustituting: the mo ab e Hpf'lllflh. while the others it. if are tixeil. ilaeh aetuatin; $tu i ear rin the epriuy w. nu its ahouliler. anti the ..';Fti2;j a" on its head. its s'itili pan ing thiougjh holes in the springs 1, u. The entire relay i:-. ae-i-urril to an insulating liar-l: hlorlz. 1H". hr meant; of the holtn n". eonnti' toting extensions of the rot-ea and llllttliliil to reeejw luel(-ni1t'-;. The rear tiItlS of the eontael springs extenil out through openings lllliili in tl" ble 'u aiul an lnehmin; shell or easing! n iH littwl to the bloc-h, with Wllil'll it forum tight joint all arouurl the eilge. This shell is r--t'iiHt l n plure hr means oi the stat} n illltili'li l to receive the nuts ,RIUEI 

